Preliminary Requirements

Safety Requirements

WARNING

IT IS THE RESPONSIBILITY OF THE OPERATOR TO OBTAIN AND OBSERVE THE MANUFACTURER'S MATERIAL SAFETY DATA SHEETS FOR CONSUMABLE MATERIALS. THESE CONTAIN INFORMATION SUCH AS, HAZARDOUS INGREDIENTS, PHYSICAL/CHEMICAL CHARACTERISTICS, FIRE, EXPLOSION, REACTIVITY, HEALTH HAZARD DATA, PRECAUTIONS FOR SAFE HANDLING, USE AND CONTROL MEASURES AND ALSO TO TAKE LOCAL REGULATIONS INTO CONSIDERATION.

WARNING

IT IS VERY IMPORTANT TO TAKE EVERY POSSIBLE PRECAUTION TO PREVENT CHEMICAL (SOLID OR SOLUTION) CONTACT WITH THE EYES OR BARE SKIN. WEAR APPROPRIATE PROTECTIVE CLOTHING, WHICH INCLUDES GOGGLES AND RUBBER GLOVES, WHEN YOU MAKE UP AND USE THE SOLUTIONS IN THIS PROCEDURE. EXAMINE RUBBER GLOVES REGULARLY FOR PIN HOLES AND REPLACED AND DISCARD THEM AS NECESSARY. KEEP EYE-WASH BOTTLES AND OTHER APPLICABLE FIRST AID EQUIPMENT AS CLOSE AS POSSIBLE TO THE WORK AREA.

IF CONTAMINATION OF THE EYES OCCURS, FLUSH THE EYES IMMEDIATELY WITH WATER, SUFFICIENT TO REMOVE THE CONTAMINATION. GO FOR MEDICAL TREATMENT IMMEDIATELY.

IF CONTAMINATION OF THE SKIN OCCURS, CLEAN YOUR SKIN WITH A LARGE QUANTITY OF CLEAN WATER THAT FLOWS.

WARNING

ALL BURNS, LARGE OR SMALL, MUST BE EXAMINED TO AT THE NEAREST FIRST AID POST.

WARNING

THE FIRST AID POST MUST BE TOLD WHICH SOLUTION (FOR EXAMPLE, THE ACIDS INVOLVED) CAUSED THE BURN.

WARNING

FINGER NAILS MUST BE KEPT SHORT AND MUST ALWAYS BE FULLY CLEANED BEFORE YOU EAT, DRINK OR SMOKE. YOU MUST NOT EAT, DRINK OR SMOKE, AT PLACES WHERE CHEMICALS ARE KEPT OR USED. ITEMS THAT ARE USED TO EAT OR DRINK WITH MUST NOT BE KEPT AT LOCATIONS WHERE CHEMICALS ARE KEPT OR USED.

WARNING

SAFETY NOTICES MUST ALWAYS BE PUT IN LOCATIONS WHERE THEY CAN BE EASILY SEEN.

WARNING

CYANIDE SALTS AND/OR SOLUTIONS ARE EXTREMELY RAPID POISONS AND RELEASE DEADLY HYDRO-CYANIC GAS IN CONTACT WITH ACIDS.

WARNING

CYANIDE SALTS AND SOLUTIONS MUST BE KEPT APART FROM ACIDS.

WARNING

CYANIDE MUST ALWAYS BE KEPT AT A SAFE LOCATION, WHERE ACCESS IS ONLY AVAILABLE TO APPROVED PERSONS.

WARNING

A SUPPLY OF CYANIDE ANTIDOTE MUST ALWAYS BE EASILY AVAILABLE.

WARNING

FUME EXTRACTION IS ESSENTIAL.

WARNING

CHROMIC ACID SPRAY IS DANGEROUS IF INHALED, BECAUSE IT CAUSES ULCERS IN THE NOSE AND, IN SOME CASES, PERFORATION OF THE NASAL SEPTUM. CHROMIC ACID SALTS AND SOLUTIONS IN CONTACT WITH THE SKIN CAN CAUSE CHROME SORES. ULCERS CAN FORM IF CHROMIC ACID GETS IN TO CUTS AND ABRASIONS. CUTS AND ABRASIONS, WHICH DO NOT HEAL, MUST BE REPORTED, IMMEDIATELY, TO THE MEDICAL DEPARTMENT.

WARNING

CHROMIC ACID MUST NOT BE USED UNLESS THE FUME EXTRACTION PLANT IS IN OPERATION AND IS FULLY SERVICEABLE.

WARNING

PROTECTIVE CLOTHING MUST BE WORN, THAT IS, PROTECTIVE GLOVES, OVERALLS, GOGGLES OR FACE VISOR AND SAFETY SHOES OR BOOTS. BARRIER CREAM MUST BE APPLIED TO THE HANDS AND FOREARMS BEFORE YOU START WORK.

WARNING

SMOKING AND THE CONSUMPTION OF FOOD NEAR THE CHROMIC ACID BATH ARE PROHIBITED.

WARNING

CHROMIC ACID IS STRONGLY OXIDIZING AND HAS SOME FIRE RISK (THAT IS, POSSIBLE SPONTANEOUS COMBUSTION OF ORGANIC MATERIALS). COMBUSTIBLE MATERIALS INCLUDE RAGS AND SAWDUST, WHICH HAVE ABSORBED CHROMIC ACID SOLUTION. SUCH CONTAMINATED MATERIALS MUST BE PUT FULLY IN A SOLUTION OF SODIUM BISULFITE TO MAKE NEUTRAL THE CHROMIC ACID; THEN DISCARD THE SOLUTION AS SPECIAL WASTE. THE SOLID MATERIAL MUST THEN BE FLUSHED WITH WATER BEFORE DISPOSAL.

WARNING

CARE MUST BE TAKEN WHEN YOU ADD COMPOUNDS WHICH CONTAIN SOLID SODIUM HYDROXIDE TO WATER, BECAUSE HEAT IS GIVEN OFF WHEN THE COMPOUND DISSOLVES. MAKE MUCH MOVEMENT OF THE SOLUTION, WITH AIR OR MECHANICAL METHODS, AS YOU ADD THE COMPOUND TO THE SURFACE OF THE SOLUTION. DO NOT ADD LARGE QUANTITIES OF THE COMPOUND, TO ONE SMALL AREA OF THE TANK, BECAUSE THE SOLUTION WILL BOIL.

CAUTION

SOME PROCEDURES IN THIS TASK RELEASE HYDROGEN DURING COATING REMOVAL. THIS CAN CAUSE HYDROGEN EMBRITTLEMENT CRACKING. THUS STEEL PARTS WITH A TENSILE STRENGTH OF MORE THAN 100 MPA OR A HARDNESS OF 302 HB OR 310 HV MUST BE STRESS-RELIEVED AND DE-EMBRITTLEMENT HEAT TREATED AT 374 TO 410 DEG F (190 TO 210 DEG C) FOR ONE HOUR AT TEMPERATURE. THIS MUST BE DONE BEFORE AND AFTER THE PARTS ARE PUT IN THE STRIPPING SOLUTION.

CAUTION

THE HEAT TREATMENTS ARE ALSO NECESSARY ON STEELS WHERE THE HARDNESS RANGE INCLUDES 1000 MPA OR 302 HB (FOR EXAMPLE, 930 TO 1080 MPA OR 283 TO 321 HB).

Procedure

1. SUBTASK 70-33-59-100-001 Make-up of the Nitric Acid Solution

   1. This is an aqueous solution which contains 53.5 to 69 oz. wt/gal (400 to 520 g/l) of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

   2. The solution make-up is by the addition of nitric acid to water in the amounts as follows:

      1. Water - 48 percent V/V.

      2. CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE - 52 percent V/V.

   3. The solution must be contained in a stainless steel tank or a P.V.C. tank with fume extraction.

   4. The tank is operated at ambient temperature (in temperate climates this is typically 73 deg F (23 deg C)). When tests have been done to demonstrate the nitric acid solution will not attack the part, the solution can be used at a temperature not greater than 122 deg F (50 deg C).

   5. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-001. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-002.

2. SUBTASK 70-33-59-100-002-001 Make-up of the Alkali Paint Removal Solution

   1. The solution is an aqueous solution of Sodium hydroxide (caustic soda). Any of the paint removal solutions from the SPM TASK 70-11-05-100-501, SUBTASK 70-11-05-100-001 are suitable for this task.

   2. For instructions on the control of the solution refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-002. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-003.

3. SUBTASK 70-33-59-100-002-002 Make-up of the Alternative Alkali Derusting Solution (Sodium Hydroxide/Sodium Gluconate)

   1. The solution is made up of 19.3 to 20.5 oz. wt /gal (145 to 155 g/l) of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID) and 6.6 to 20 oz. wt/gal (50 to 150 g/l) of CoMat 01-061 SODIUM GLUCONATE.

   2. Any ratio of sodium hydroxide to sodium gluconate can be used, but a 1:1 ratio is usually found to be the most efficient.

   3. The solution must be contained in a stainless steel tank and operated at 176 to 194 deg F (80 to 90 deg C) and fume extraction must be provided.

   4. For instructions on the control of the solution refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-002. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-003.

4. SUBTASK 70-33-59-100-003 Make-up of the Cyanide Solution

   
   WARNING
   THIS SUBTASK USES CYANIDE.

   1. This is an aqueous solution and is made up of 6.7 to 12 oz. wt/ gal (50 to 90 g/l) of CoMat 01-062 NICKEL ELECTROPLATE STRIPPINGSOLN and 12 to 24 oz. wt/gal (90 to 180 g/l) of CoMat 01-063 SODIUM CYANIDE NaCN in water.

   2. The solution must be contained in a mild steel tank or a stainless steel tank.

      NOTE

      Heating both shortens life and increases the probability of base material attack.

   3. The solution is normally operated cold but can be heated to 158 deg F (70 deg C) for more rapid stripping.

   4. For instructions on the control of the solution refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-003. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-004.

5. SUBTASK 70-33-59-100-004 Make-up of the 10 Percent Sulfuric Acid Solution

   1. The solution is an aqueous one containing 22.4 to 25 oz. wt/gal (168 to 188 g/l) of CoMat 01-050 SULFURIC ACID H2SO4.

   2. NOTE

      The acid must be added to the water very slowly and cautiously while stirring to disperse the heat created as the acid is added to the water.

      The solution is made-up by the addition of sulfuric acid to water in these amounts:

      CoMat 01-050 SULFURIC ACID H2SO4 - 10 percent V/V.

      Water - 90 percent V/V.

   3. The solution must be contained in a lead lined tank or a plastic tank using lead plate cathodes.

   4. The tank should be operated at room temperature and have fume extraction installed. If the solution is likely to exceed 104 deg F (40 deg C) install lead cooling coils should be installed in the tank.

   5. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-004. To use solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-005 or SUBTASK 70-33-59-300-010.

6. SUBTASK 70-33-59-100-005-001 Make-up of the Electrolytic Rochelle Carbonate Solution

   1. The solution is aqueous, made-up at a strength of 24 to 29.3 oz. wt/gal (180 to 220 g/l) of CoMat 01-030 SODIUM CARBONATE Na2CO3 and 6 to 7.3 oz. wt/gal (45 to 55 g/l) of CoMat 01-065 ROCHELLE SALT at a nominal ratio of 7.6:1. Add the sodium carbonate slowly to avoid foaming of the solution.

   2. The initial pH of the solution shall be between pH 9.5 and pH 10.5. Adjust the pH with additions of CoMat 01-030 SODIUM CARBONATE Na2CO3 or CoMat 01-066 TARTARIC ACID CRYSTALS, as necessary, to make the pH of the solution within the range pH 9.5 to pH 10.5.

   3. The solution must be contained in a lead-lined mild steel tank or a plastic-lined mild steel tank with lead cathodes. The tank must be fitted with fume extraction.

   4. The solution must be mechanically agitated; air agitation must not be used.

   5. The tank must have heating and cooling coils to keep an operating temperature of 104 to 140 deg F (40 to 60 deg C).

   6. For instructions on the control of the Rochelle carbonate salt solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-005. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-006.

   7. For the make-up of an alternative solution, refer to Step.

7. SUBTASK 70-33-59-100-005-002 Make-up of the Alternative Sodium Carbonate Solution

   1. The solution is aqueous, made-up at a strength of 29.3 to 33.4 oz. wt/gal (220 to 250 g/l) of CoMat 01-030 SODIUM CARBONATE Na2CO3 and 3.5 to 5 oz. wt/gal (26 to 37 g/l) of CoMat 01-066 TARTARIC ACID CRYSTALS. The ratio of the CoMat 01-030 SODIUM CARBONATE Na2CO3 to CoMat 01-066 TARTARIC ACID CRYSTALS at initial make-up shall be 239 g : 29 g (nominally 8:1). Add the sodium carbonate slowly to avoid foaming of the solution.

   2. The initial pH of the solution shall be between pH 9.5 and pH 10.5. Adjust the pH of the solution with additions of CoMat 01-030 SODIUM CARBONATE Na2CO3 or CoMat 01-066 TARTARIC ACID CRYSTALS, as necessary, to make the pH of the solution within the range pH 9.5 to pH 10.5.

   3. The solution must be contained in a lead-lined mild steel tank or a plastic-lined mild steel tank with lead cathodes. The tank must be fitted with fume extraction.

   4. The solution must be mechanically agitated; air agitation must not be used.

   5. The tank must have heating and cooling coils to keep an operating temperature of 104 to 194 deg F (40 to 90 deg C).

   6. For instructions on the control of this Sodium carbonate, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-005. To use solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-006.

8. SUBTASK 70-33-59-100-006-001 Make-up of the Alkaline Permanganate Solution

   1. The solution is an aqueous one and contains alkaline permanganate. All of the solutions from the SPM TASK 70-11-54-100-501, SUBTASK 70-11-54-100-003 are suitable.

   2. The solution must be contained in a mild steel tank or a stainless steel tank. Fume extraction must be provided.

   3. For instructions on the control of the alkaline permanganate solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-006. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-007.

9. SUBTASK 70-33-59-100-006-002 Make-up of the Alternative Alkaline Permanganate Solution

   1. The solution is made up of 10.5 to 16 oz. wt/gal (80 to 120 g/l) of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID) and 4 to 8 oz. wt/gal (30 to 60 g/l) of CoMat 01-055 POTASSIUM PERMANGANATE KMnO4.

   2. The solution must be contained in a mild steel tank or a stainless steel tank. Fume extraction must be provided.

   3. For instructions on the control of the alkaline permanganate solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-006. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-007.

10. SUBTASK 70-33-59-100-007 Make-up of the Chromic Acid Neutralizing Solution

    1. The solution is an aqueous one that contains 13.3 oz. wt/gal (100 g/l) of CoMat 01-023 CHROMIUM TRIOXIDE CrO3(CHROM.ACID) and 0.3 oz. wt/gal (2.4 g/l) of CoMat 01-024 BARIUM CHROMATE BaCrO4 in CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

    2. The solution must be contained in a lead-lined mild steel tank fitted with a means of heating and fume extraction. Steel tanks must be welded adjacent to the corners to reduce chemical attack on weak areas.

    3. Dissolve the CoMat 01-023 CHROMIUM TRIOXIDE CrO3(CHROM.ACID) in CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

    4. Make the CoMat 01-024 BARIUM CHROMATE BaCrO4 into a slurry with water and add to the chromic acid solution to precipitate any sulfate which can be present. The maximum permitted limit of sulfate is 0.04 oz. wt/gal (0.3 g/l).

    5. Chlorides are much more aggressive than sulfate. If CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER is not used at new make-up, the addition of CoMat 01-052 SILVER CHROMATE AgCrO4 will be necessary to precipitate the chloride. The maximum permitted limit of chloride is 0.1 g/l.

    6. For instructions on the control of the chromic acid neutralizing solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-007. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-007.

11. SUBTASK 70-33-59-100-008 Make-up of the Nitric Acid Neutralizing Solution

    1. This is an aqueous solution which contains 40 to 66.7 oz. wt/gal (300 to 500 g/l) of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE and 1 ml/l of CoMat 01-017 FLUORESCENT PENETRANT REMOVER.

    2. The solution must be contained in a stainless steel tank or suitable non-metallic tank fitted with fume extraction.

    3. CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE contains 133 oz. wt/gal (1000 g/l) of nitric acid.

    4. You can get the necessary concentration if you carefully add the correct proportion, by volume of nitric acid to water (for example, add 66.7 oz. wt/gal (500 g/l) of nitric acid to 500 ml of water).

    5. Stir continuously while you add the acid to the water. Finally, add 1 ml of CoMat 01-017 FLUORESCENT PENETRANT REMOVER for each liter of solution; then stir well.

    6. The concentration must be kept within the range of 40 to 66.7 oz. wt/gal (300 to 500 g/l) unless specified differently in the Engine Manual.

    7. For instructions on the control of the nitric acid neutralising solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-008. to use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-007.

12. SUBTASK 70-33-59-100-008-A01 Alternative Nitric Acid Neutralizing Solution

    1. Deleted, use the solution given in Step.

13. SUBTASK 70-33-59-100-022 Make-up of the Nitric Acid/Hydrogen Peroxide Solution

    1. This solution can be made up at two strengths:

       1. 6 percent hydrogen peroxide.

          1. 50 mls of CoMat 01-058 NITRIC ACID HNO3 and 950 mls of CoMat 01-091 HYDROGEN PEROXIDE H2O2.

       2. 30 percent hydrogen peroxide.

          1. 50 mls of CoMat 01-058 NITRIC ACID HNO3 and 190 mls of CoMat 01-035 HYDROGEN PEROXIDE H2O2.

    2. The solution must be contained in a stainless steel tank or P.V.C tank fitted with fume extraction and is used at ambient temperature.

    3. For instructions on the control of the Nitric acid/Hydrogen peroxide solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-009. To use the solutions, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-009.

14. SUBTASK 70-33-59-100-010 Make-up the 30 Percent Sulfuric Acid solution

    1. The solution is an aqueous one that contains 69 to 80 oz. wt/gal (520 to 600 g/l) of CoMat 01-050 SULFURIC ACID H2SO4.

       NOTE

       The acid must be added to the water very slowly and cautiously while stirring to disperse the heat created as the acid is added to the water.

    2. The solution is made-up by the addition of sulfuric acid to water in these amounts:

       CoMat 01-050 SULFURIC ACID H2SO4 - 30 percent V/V.

       Water - 70 percent V/V.

    3. The solution must be contained in a lead-lined tank or a plastic tank with lead plate cathodes.

    4. The tank should be operated at room temperature and have fume extraction installed.

    5. If the solution is likely to exceed 104 deg F (40 deg C) install lead cooling coils in the tank.

    6. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-004. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-010.

15. SUBTASK 70-33-59-100-011 Make-up of the GT 376 Solution

    1. The solution is an aqueous one and contains equal amounts of water and Enthone GT 376 Part A and 120 g/l of GT 376 Part B (refer to the manufacturer's instructions). For this solution the process tank should be made of polypropylene. The operation temperature is 122 to 158 deg F (50 to 70 deg C).

    2. Fill the process tank to approximately 40 percent of the operation volume with water. Add the GT 376 and stir to mix.

    3. Add the necessary amount of GT 376 Part B and stir to mix.

    4. Fill the tank to the operation volume with water and heat to the operation temperature.

    5. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-010. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-011.

16. SUBTASK 70-33-59-100-012 Make-up of the Inhibited Hydrochloric Acid Solution

    1. The solution is an aqueous one and contains 20 to 25 percent by volume (60 to 80 g/l (22 to 29 oz. wt)) of CoMat 01-099 HYDROCHLORIC ACID and 0.2 percent v/v of inhibitor.

    2. The solution should be contained in a polyethylene process tank fitted with fume extraction. Fill the process tank to approximately half full. Carefully add the necessary amount of the CoMat 01-099 HYDROCHLORIC ACID and stir to mix. add the necessary amount of the CoMat 01-102 INHIBITOR ADDITION AGENT and stir to mix. Carefully fill the tank to the operation volume.

    3. The solution is used at 122 to 158 deg F (50 to 70 deg C).

    4. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-011. To use the solution refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-012.

17. SUBTASK 70-33-59-100-013 Make-up of the Aqua Regia Solution

    1. The solution is made-up of 3 parts CoMat 01-099 HYDROCHLORIC ACID and 1 part CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

    2. The solution must be contained in a suitable polythene tank fitted with a fume extraction system.

    3. NOTE

       The higher the temperature, the faster the acid will remove the coating.

       The solution is used at ambient temperature.

    4. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-012. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-013.

18. SUBTASK 70-33-59-100-014 Make-up of the Inhibited Hydrochloric Acid and Wetting Agent Solution

    1. The solution is an aqueous one and contains 65 to 70 percent by volume (180 to 220 g/l (65 to 79 oz. wt)) of CoMat 01-099 HYDROCHLORIC ACID and 0.3 percent v/v of CoMat 01-219 ACID ADDITION AGENT.

    2. The solution should be contained in a polyethylene process tank fitted with fume extraction. Fill the process tank to approximately one quarter full. Carefully add the necessary amount of the CoMat 01-099 HYDROCHLORIC ACID and stir to mix. Add the necessary amount of the CoMat 01-102 INHIBITOR ADDITION AGENT and stir to mix. Carefully fill the tank to the operation volume.

    3. NOTE

       The higher the temperature, the faster the acid will remove the coating.

       The solution is used at ambient temperature.

    4. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-013. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-014.

19. SUBTASK 70-33-59-100-015 Make-up of Enstrip GT 317 Solution

    1. This solution is an aqueous one. It is made-up with Enstrip GT 317 Part A, Enstrip GT 317 Part B and Enstrip GT 317 Part C. For this solution the process tank should be made of polypropylene. The solution is made up at: 50 percent by volume of Solution A, 20 percent by volume of Solution B, 5 percent by volume of Solution C.

    2. Fill the process tank to 25 percent of the operating volume with water.

    3. Add the necessary amount of Solution A; stir to mix.

    4. Add the necessary amount of Solution B; stir to mix.

    5. Add the necessary amount of Solution C; stir to mix.

    6. The operation temperature is 70 to 90 deg F (21 to 32 deg C).

    7. For instructions on the control of the solution, refer to the SPM TASK 70-33-59-200-502, SUBTASK 70-33-59-200-014. To use the solution, refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-015.